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2. The method of claim 1 , wherein the reconstructed HOA audio representation is divided into frequency subbands and the DRC gain value is applied to each subband separately.
Audio signal processing and dynamic range control. This invention addresses the need for applying dynamic range control (DRC) to High Order Ambisonics (HOA) audio representations. The method involves reconstructing an HOA audio representation. This reconstructed HOA audio representation is then divided into multiple frequency subbands. A dynamic range control (DRC) gain value is determined. Crucially, this DRC gain value is applied independently to each of the frequency subbands of the reconstructed HOA audio representation. This allows for frequency-dependent control of the audio dynamics within the spatial audio representation.
3. A non-transitory computer readable storage medium having computer executable instructions that when executed on a computer cause the computer to perform the method of claim 1 .
A system and method for automated data processing involves a non-transitory computer-readable storage medium containing executable instructions that, when run on a computer, perform a method for analyzing and transforming data. The method includes receiving input data from a user or external source, processing the data through a series of predefined operations, and generating output data based on the processed information. The operations may include filtering, sorting, aggregating, or applying mathematical transformations to the input data. The system may also validate the input data to ensure it meets specified criteria before processing. The output data is then stored or transmitted to another system for further use. The method may also include logging the processing steps and results for auditing or debugging purposes. The system is designed to handle large datasets efficiently, reducing manual effort and improving accuracy in data analysis tasks. The instructions are stored in a non-volatile memory, ensuring persistence even when the computer is powered off. The system may also include user interfaces for configuring processing parameters or reviewing results. The method is applicable in various domains, such as business analytics, scientific research, or financial reporting, where automated data processing is required.
5. The apparatus of claim 4 , wherein the reconstructed HOA audio representation is divided into frequency subbands and the DRC gain value is applied to each subband separately.
This invention relates to audio processing, specifically dynamic range compression (DRC) in higher-order ambisonic (HOA) audio systems. The problem addressed is the need for frequency-dependent dynamic range control in HOA audio to improve perceptual quality while preserving spatial audio characteristics. The apparatus processes an HOA audio representation by first reconstructing it into a format suitable for DRC. The reconstructed HOA audio is then divided into multiple frequency subbands. A DRC gain value is calculated and applied independently to each subband. This allows for frequency-specific dynamic range adjustments, which can enhance audio clarity and loudness balance without distorting the spatial audio perception. The system ensures that the DRC processing preserves the directional and spatial attributes of the original HOA content, which is critical for immersive audio experiences. The invention improves upon prior methods by applying DRC in a subband-specific manner, rather than uniformly across the entire frequency spectrum. This approach provides more precise control over dynamic range, reducing artifacts and maintaining the integrity of the spatial audio field. The apparatus is particularly useful in applications requiring high-quality spatial audio reproduction, such as virtual reality, augmented reality, and immersive media playback.
Unknown
April 28, 2020
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